US4390367A - High-alloyed steel being resistive to corrosion by natural gas - Google Patents

High-alloyed steel being resistive to corrosion by natural gas Download PDF

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Publication number
US4390367A
US4390367A US06/275,337 US27533781A US4390367A US 4390367 A US4390367 A US 4390367A US 27533781 A US27533781 A US 27533781A US 4390367 A US4390367 A US 4390367A
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Prior art keywords
steel
corrosion
sulphur content
natural gas
alloy
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US06/275,337
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English (en)
Inventor
Norbert Niehaus
Rolf Popperling
Horst Bester
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Vodafone GmbH
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Mannesmann AG
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Assigned to MANNESMANN AKTIENGESELLSCHAFT reassignment MANNESMANN AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BESTER, HORST, NIEHAUS, NORBERT, POPPERLING, ROLF
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten

Definitions

  • the present invention relates to a high-alloyed, passivatible, austenitic-ferritic steel alloy and to a method of making and using pipes or receptacles from blanks or billets made of such an alloy.
  • High-alloyed steel is used for pipes, tubes, and equipment that conduct, hold, process, and otherwise transport and handle acidic gases, such as natural gas.
  • An alloy of this type is described, for example, in German printed patent application No. 26,16,599. This alloy has the following consistency (all percentages by weight):
  • This known steel is, indeed, satisfactory with respect to resistence to corrosion from hydrogen sulfide and carbon dioxide as well as chlorides, provided these components contained in natural gas do not exceed rather critical limits.
  • This known alloy is also strong and can be welded. However, ductability and toughness, particularly at low temperatures (e.g., -70° C.) is not satisfactory.
  • this steel alloy is annealed by a solution treatment and, subsequently, cold-worked at a degree of plastic deformation of at least 3%.
  • Table 1 identifies by numbers 1 through 5 the five different alloys having the stated consistency as far as additives to the iron are concerned:
  • Table 2 below identifies the same examples (Nos. 1 to 5), listing for each of them yield point, tensile strength, and impact notch work, longitudinally as well as transversely to the principal direction of the cold-working deformation:
  • Yield point and tensile strength values are stated in Newtons per millimeter squares and the notch impact work in joule.
  • the alloys No. 1 and 2 are composed in accordance with the present invention.
  • the alloys No. 3, 4, and 5, all have components in the same ranges and quite close to those of the alloys No. 1 and 2, except that their sulphur content is higher. To be sure, the sulphur content is still relatively low, a fraction of one-tenth of one percent; but the states limit of 0.005% in examples 3, 4, and 5 is definitely exceeded (twofold to threefold).
  • Table 2 reveals that the yield point and tensile strength are quite similar for all examples; but toughness, prepresented by notch impact work, particularly in the transverse direction, is drastically increased by the reduction of sulphur content.
  • FIG. 1 is a diagram showing impact notch work in joule in dependence upon the sulphur content at room temperature.
  • FIG. 2 is a similar diagram, showing impact notch work for one of the sample alloys, but at different temperatures.
  • FIG. 3 is a diagram in which relative deformation ( ⁇ ) is plotted against notch impact work for different sample alloys, their sulphur content being a parameter.
  • FIG. 1 shows transverse and lengthwise notch impact work for austenitic steel of 1.4401 (squares) at a temperature of 20° C.
  • the terms “lengthwise” and “transverse” refer to the direction of cold-working undergone by the steel.
  • FIG. 1 shows two curves for the same kind of notch impact work, however now for austenitic-ferritic steel (circles), in which the nonsulphur components are as per Table 1.
  • the steel has in each instance been thermally treated; i.e. annealed, for obtaining a solid solution.
  • FIG. 2 illustrates that the notch impact work in this transverse direction, though decreasing with temperature, is still very high for a sulphur content of approximately 0.002%.
  • the relatively high value for a temperature of -70° C. is particularly noteworthy.
  • FIG. 3 illustrates notch impact work for samples 1 (circles) and 5 (squares) in Table 1, and for each instance notch in longitudinal and transverse directions is depicted.
  • the sulphur content is thus used as a parameter; the abscissa shows relative deformation of cold-working ( ⁇ ).
  • ⁇ cold-working
  • a sulphur content of 0.016% produces clearly a drastic reduction in toughness.
  • a steel of this type is very suitable as raw material for the making of tubing, receptacles, and containers to be operated at a low temperature and for the conduction, storage, and/or processing of acidic natural gas.
  • This steel is particularly resistant to chlorides, hydrogen sulfide, and carbon dioxide contained in such a gas or other media.
  • the steel blanks to be used for making such pipes, containers, etc. are preferably solution treatment annealed, followed by cold-working, for a degree of plastic deformation in excess of 3%.
  • the final product is particular resistance against stress corrosion cracking as well as against wearing corrosion.
  • the material is tough, particularly at low temperatures.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
US06/275,337 1980-06-25 1981-06-19 High-alloyed steel being resistive to corrosion by natural gas Expired - Fee Related US4390367A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3024380A DE3024380C2 (de) 1980-06-25 1980-06-25 Verwendung einer Stahllegierung
DE3024380 1980-06-25

Publications (1)

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US4390367A true US4390367A (en) 1983-06-28

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US06/275,337 Expired - Fee Related US4390367A (en) 1980-06-25 1981-06-19 High-alloyed steel being resistive to corrosion by natural gas

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US (1) US4390367A (enrdf_load_stackoverflow)
JP (1) JPS5726152A (enrdf_load_stackoverflow)
AR (1) AR228361A1 (enrdf_load_stackoverflow)
AT (1) ATA262381A (enrdf_load_stackoverflow)
BE (1) BE889196A (enrdf_load_stackoverflow)
BR (1) BR8103974A (enrdf_load_stackoverflow)
CA (1) CA1177289A (enrdf_load_stackoverflow)
CS (1) CS228146B2 (enrdf_load_stackoverflow)
DE (1) DE3024380C2 (enrdf_load_stackoverflow)
FR (1) FR2485568A1 (enrdf_load_stackoverflow)
GB (1) GB2078780B (enrdf_load_stackoverflow)
IT (1) IT1136781B (enrdf_load_stackoverflow)
NL (1) NL8103008A (enrdf_load_stackoverflow)
NO (1) NO812162L (enrdf_load_stackoverflow)
SE (1) SE8103966L (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4500351A (en) * 1984-02-27 1985-02-19 Amax Inc. Cast duplex stainless steel
US4560408A (en) * 1983-06-10 1985-12-24 Santrade Limited Method of using chromium-nickel-manganese-iron alloy with austenitic structure in sulphurous environment at high temperature
US4570708A (en) * 1982-04-30 1986-02-18 Skf Steel Engineering Ab Method of using pipes resistant to hydrosulphuric acid
US4664725A (en) * 1984-11-28 1987-05-12 Kabushiki Kaisha Kobe Seiko Sho Nitrogen-containing dual phase stainless steel with improved hot workability
US4715908A (en) * 1985-11-26 1987-12-29 Esco Corporation Duplex stainless steel product with improved mechanical properties
US4722755A (en) * 1985-03-15 1988-02-02 Sumitomo Metal Industries, Ltd. Hot working method for superplastic duplex phase stainless steel
US4816085A (en) * 1987-08-14 1989-03-28 Haynes International, Inc. Tough weldable duplex stainless steel wire
US5238508A (en) * 1984-02-07 1993-08-24 Kubota, Ltd. Ferritic-austenitic duplex stainless steel
CN116083815A (zh) * 2023-02-01 2023-05-09 杭州碱泵有限公司 一种耐磨不锈钢及其制备工艺

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58197260A (ja) * 1982-05-13 1983-11-16 Kobe Steel Ltd 酸性油井用２相系ステンレス鋼
SE458717B (sv) * 1986-11-17 1989-04-24 Sandvik Ab Cylinder foer vaermevaexlare
JPS6356250A (ja) * 1987-02-07 1988-03-10 Fuji Oil Co Ltd 製菓用油脂ブルーミング防止剤
SE461191B (sv) * 1988-04-21 1990-01-22 Sandvik Ab Anvaendning av en rostfri ferrit-austenitisk staallegering som implantat i fysiologisk miljoe
US4915752A (en) * 1988-09-13 1990-04-10 Carondelet Foundry Company Corrosion resistant alloy

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726668A (en) * 1969-11-29 1973-04-10 Boehler & Co Ag Geb Welding filling material
US3785787A (en) * 1972-10-06 1974-01-15 Nippon Yakin Kogyo Co Ltd Stainless steel with high resistance against corrosion and welding cracks
US3910788A (en) * 1973-04-21 1975-10-07 Nisshin Steel Co Ltd Austenitic stainless steel
US4055448A (en) * 1973-04-10 1977-10-25 Daido Seiko Kabushiki Kaisha Ferrite-austenite stainless steel
US4099966A (en) * 1976-12-02 1978-07-11 Allegheny Ludlum Industries, Inc. Austenitic stainless steel

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1604981A (en) * 1967-03-16 1972-06-26 Stainless steel - contg chromium and nickel with added molybdenum,copper and nitrogen to improve props
BE757048A (fr) * 1969-10-09 1971-03-16 Boehler & Co Ag Geb Applications d'un acier entierement austenique dans des conditions corrodantes
JPS5143807B2 (enrdf_load_stackoverflow) * 1973-02-20 1976-11-25
FR2241625A1 (en) * 1973-08-20 1975-03-21 Langley Alloys Ltd Copper contg. high alloy steel - with improved strength, corrosion and erosion resistance after casting or heat treating
JPS52138421A (en) * 1976-05-15 1977-11-18 Nippon Steel Corp Two-phased stainless steeel
JPS52143913A (en) * 1976-05-25 1977-11-30 Nippon Steel Corp Two phases stainless steel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726668A (en) * 1969-11-29 1973-04-10 Boehler & Co Ag Geb Welding filling material
US3785787A (en) * 1972-10-06 1974-01-15 Nippon Yakin Kogyo Co Ltd Stainless steel with high resistance against corrosion and welding cracks
US4055448A (en) * 1973-04-10 1977-10-25 Daido Seiko Kabushiki Kaisha Ferrite-austenite stainless steel
US3910788A (en) * 1973-04-21 1975-10-07 Nisshin Steel Co Ltd Austenitic stainless steel
US4099966A (en) * 1976-12-02 1978-07-11 Allegheny Ludlum Industries, Inc. Austenitic stainless steel

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4570708A (en) * 1982-04-30 1986-02-18 Skf Steel Engineering Ab Method of using pipes resistant to hydrosulphuric acid
US4560408A (en) * 1983-06-10 1985-12-24 Santrade Limited Method of using chromium-nickel-manganese-iron alloy with austenitic structure in sulphurous environment at high temperature
US5238508A (en) * 1984-02-07 1993-08-24 Kubota, Ltd. Ferritic-austenitic duplex stainless steel
US4500351A (en) * 1984-02-27 1985-02-19 Amax Inc. Cast duplex stainless steel
US4664725A (en) * 1984-11-28 1987-05-12 Kabushiki Kaisha Kobe Seiko Sho Nitrogen-containing dual phase stainless steel with improved hot workability
US4722755A (en) * 1985-03-15 1988-02-02 Sumitomo Metal Industries, Ltd. Hot working method for superplastic duplex phase stainless steel
US4715908A (en) * 1985-11-26 1987-12-29 Esco Corporation Duplex stainless steel product with improved mechanical properties
US4816085A (en) * 1987-08-14 1989-03-28 Haynes International, Inc. Tough weldable duplex stainless steel wire
CN116083815A (zh) * 2023-02-01 2023-05-09 杭州碱泵有限公司 一种耐磨不锈钢及其制备工艺

Also Published As

Publication number Publication date
CA1177289A (en) 1984-11-06
FR2485568B1 (enrdf_load_stackoverflow) 1984-08-24
NO812162L (no) 1981-12-28
FR2485568A1 (fr) 1981-12-31
IT1136781B (it) 1986-09-03
NL8103008A (nl) 1982-01-18
AR228361A1 (es) 1983-02-28
BR8103974A (pt) 1982-03-09
BE889196A (fr) 1981-10-01
JPS5726152A (en) 1982-02-12
GB2078780A (en) 1982-01-13
DE3024380C2 (de) 1983-09-29
SE8103966L (sv) 1981-12-26
CS228146B2 (en) 1984-05-14
IT8122071A0 (it) 1981-06-01
GB2078780B (en) 1984-04-11
ATA262381A (de) 1984-01-15
DE3024380A1 (de) 1982-01-21

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